Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,160 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 26, 2026
In plain English
Lye. Used in small amounts to adjust pH, or to turn fats into soap.
What it does
Contains Sodium Hydroxide: buffering
Function listed in CosIng
Contains Sodium Hydroxide: denaturant
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 37890, accessed October 22, 2026. Also listed as natrii hydroxidum.
Products that contain Sodium Hydroxide
Pixi
Peel & Polish
Exfoliant · Lists exfoliating acid, coconut derivatives
The INKEY List
Peptide Moisturizer
Moisturizer · Lists fragrance allergens
K18
PEPTIDE PREP™ detox shampoo
Shampoo · 8.5oz · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, salicylic acid, coconut derivatives
Maelove
Peptide Squad Collagen Renewal Serum
Serum · Lists drying alcohol, silicones
Allies of Skin
Peptides & Omegas Firming Eye Cream
Eye cream · Lists fragrance allergens, exfoliating acid
Henkel
Perfect Mousse 600 Châtain clair
92,5 ml (35 + 35 + 22,5 ml ) · Label from France · Lists fragrance, fragrance allergens, drying alcohol, sulfates, parabens, silicones, coconut derivatives
Henkel
Perfect Mousse Acajou 586
92,5 ml (35 + 35 + 22,5 ml ) · Label from France · Lists fragrance, fragrance allergens, drying alcohol, sulfates, parabens, silicones, coconut derivatives
Henkel
Perfect Mousse Châtain Chocolat 465
92,5 ml (35 + 35 + 22,5 ml) · Label from France · Lists fragrance, fragrance allergens, drying alcohol, sulfates, parabens, silicones, coconut derivatives
Henkel
Perfect Mousse Chocolats Soufflés Brownie 365
92,5 ml (35 + 35 + 22,5 ml ) · Label from France · Lists fragrance, fragrance allergens, drying alcohol, sulfates, parabens, silicones, coconut derivatives
Dr. Dennis Gross
Perfectly Dosed Treatment (Extra Strength 0.5%)
Serum · Lists fragrance allergens, drying alcohol, exfoliating acid, retinoid
Clear
Perfume Warm Forest Shampoo
120 ml · Label from Cambodia · Lists fragrance, sulfates, silicones, salicylic acid, coconut derivatives
Dr. Dennis Gross
pH Balance Replenishing Cream
Moisturizer · Lists fragrance allergens, exfoliating acid, silicones, salicylic acid, coconut derivatives
The Ordinary
PHA 5% Exfoliating Lip Serum
Lip · Lists exfoliating acid
The INKEY List
PHA Toner
Toner · Lists exfoliating acid
Herbivore
PHOENIX Rosehip + Sea Buckthorn Body Cream
Body lotion · 200 mL · Lists fragrance, fragrance allergens, essential oils
Dermalogica
Phyto Nature Lifting Eye Cream
Eye cream · Lists fragrance allergens, essential oils
Dermalogica
Phyto Nature Oxygen Cream
Moisturizer · Lists essential oils
True Botanicals
Phyto-Retinol Anti-Aging Body Lotion
Body lotion · 4.3oz · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, coconut derivatives
L’Oréal
Phytoclear antipelliculaire - Shampooing régulateur
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, sulfates, salicylic acid, coconut derivatives
pink cashmere
Ingredients incomplete, can’t check
Tree Hut
Pink Champagne Hydraglow Body Lotion
Body lotion · Lists fragrance, fragrance allergens, drying alcohol, silicones
Suave
Pistachio Cream 48H Moisture Body Lotion
Body lotion · 18oz · Lists fragrance, fragrance allergens, silicones, coconut derivatives
Suave
Pistachio Cream Exfoliating Body Wash & Scrub
Body wash · 18oz · Ingredients incomplete, can’t check
Act+Acre
Plant Based Stem Cell Conditioner™
Conditioner · Lists fragrance allergens, drying alcohol, essential oils
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